2012 HW1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6613942101 ± 1.77e-07
Semi-major axis (a)1.0608222511 AU ± 1.84e-09
Inclination (i)49.57240706° ± 1.90e-05
Long. of Asc. Node (Ω)207.81030709° ± 4.23e-06
Arg. of Perihelion (ω)163.70405505° ± 6.26e-06
Mean Anomaly (M)65.63353683° ± 2.44e-05
Mean Motion (n)0.9020868359°/day ± 2.34e-09
Perihelion dist (q)0.35920056 AU ± 1.88e-07
Aphelion dist (Q)1.76244395 AU ± 1.88e-07
Orbital Period1.09260688 yr ± 2.84e-09
Physical Parameters
H (abs. magnitude)20.03
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.232″
Uncertainty0
Orbit TypeApollo
MOID0.396605 AU
Observations Used132
Oppositions1
Arc Total2012-2025
First Observation Used2012-04-17
Last Observation Used2025-05-01
Observations (154)
Date Type RA Dec Mag Band Observatory
2025-04-28 07:13:41 C 12 50 53.664 -04 03 46.08 V G96
2025-05-01 08:22:01 C 12 42 12.830 -01 22 46.03 X F51
2025-05-01 08:43:49 C 12 42 10.234 -01 21 58.87 X F51
2025-05-01 09:27:20 C 12 42 05.062 -01 20 24.63 X F51